Leaf-turner



PATENTED MAR. 27, 1906.

M. J'. BRENNANL LEAF TURNER.

APPLICATION FILED 001'. 21.1905.

lviincooes MARTIN J. BRENNAN, OF DAYTON, OHIO.

LEAF-TURNER.

Specification of Letters Patent.

Patented March 27, 1906.

Application filed October 21, 1905. Serial No. 283,751.

To all whom 71/; may concern.-

Be it known that I, MARTIN- J. BRENNAN, a citizen of the United States,residing at Dayton, in the county of Montgomery and State of Ohio, haveinvented certain new and useful Improvements in Leaf-Turners; and I dodeclare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same, reference being had to theaccompanying drawings, and to the figures of reference marked thereon,which form a part of this specification.

This invention relates to new and useful improvements in sheet-turnersadapted for turning music or other leaves.

The object of the invention is to provide a sheet-turner which is simplein construction and which is operated with little effort by theperformer or operator.

Preceding a detailed description of the in 'vention reference is made tothe accompanying drawings, of whic Figure 1 is a front elevation of myimproved sheet-turner. Fig. 2 is a section on the line a: m of Fig. 1looking downwardly. Fig. 3 is a detached detail view of one .of thekeys. Fig. 4 is a detached view of one of the sheet-clamps. Fig. 5 is adetail view of one of the spur-wheels and the connected end of one ofthe frames or racks.

In a detail description of the invention similar reference charactersindicate corresponding parts. p

1 designates a metallic base-plate which may be permanently attached tothe front of a piano or other placefor example, to a standor it may beattached to a suitable board which may be supported in the front of apiano or stand without being attached.

This plate 1 has projected vertically there-- from a post or upright 2,tothe upper end of which is movably secured the upper horizontal arms ofa series of frames or racks 5. The ends of these upper portions of saidracks are formed with eyes 3', which fit over the upper end of the post2 and are inclosed between lower and upper collars 4. The lowerhorizontal arms or portions of these frames 5 are each attached -tospur-wheels 6, the number of said spur-wheels being in accordance withthe number of frames. Each one of these frames supports a sheet of themusic or other sheet which is held in position by clips eft of the post2.

20, said clips being fixed to suitable parts of the frames. The framesturn one at a time from the position shown in Fig. 1 to a position onthe left of the post 2. The following is the mechanism'by means of whichsaid frames are turned. 13 designates a series of segment-gears whichcorrespond to the number of spur-wheels 6 and engage with saidspur-wheels. These segment-gears 13 are loosely mounted on a shaft 14,which projects from the base-plate 1 parallel with the pinion-shaft 7.Connected with each of said segment-gears 13 and on each side arelinklevers 8 and 11, which are pivoted at 12, the link-levers 8 beingpivoted individually upon shafts 9, which project from the base-plate 1.The outer ends 10 of the levers 8 project down at right angles and inline with the ends 18 of the key-levers 16, there being one of suchkeylevers 16 for each of the link-levers 8. The forward ends of thekey-levers 16 terminate in finger-pieces 17, and each series of saidlevers or keys are fulcrumed upon a common shaft 19. The inner oractuating ends 18 of these key-levers act as cams when each'key isdepressed and by engaging with the projected ends of the levers 8 causesaid levers to move upon their pivots 9 and to impart movement to theindividual segment-gears 13.

As shown in Fig. 2, the leaf-frames 5 are in position for the reading ofthe music or sheet, and as each page is finished it is moved to the leftof the post 2 by depressing each one of the finger-pieces 17 of the keys16. 15 designates stop-pins which prevent the levers 8- and 11 frombreaking joints in but one direction. As shown in Fig. 2, the key-levers16 are bent so as to clear each other and to present the finger-pieces17 in alinement and in a convenient position to be touched by theperformer or operator when each page or sheet has been rendered. Wheneac of the frames or racks have been turned in the manner described,they may be bodily moved backward to the position shown in Fi 1, or theymay be singly moved backward y deressing each one of the key-levers 16on the are. shown m Fig. 1 they are in a position for the performer oroperator to turn the frames to the left, itbeing understood that thefirst sheet is attached to the first frame, the next sheet is attachedto the next frame, and so on, according to the number of pages.

As the racks or frames 5 The device as shown illustrates four frames orracks; but this number may obviously be increased, if desired.

It is thought from the above description that the operation of thedevice is too apparent to require a minute description; but it will beunderstood that each frame or rack is given independent movement throughits spur-wheel 6 from one of the se ment-gears 13, said segment-gearsbein osciIlated in opposite directions through t e link-levers 8 and 11, which in turn are operated from the he levers 16.

I IaVing described my invention, I claim- 1. In a leaf-turner, a seriesof individual racks or frames upon which the sheets are held, an uprightpost to which the upper ends of saidracks or frames are looselyconnected, a series of pinions to which the lower ends of said racks orframes are fixed, a corresponding series of actuatin gears engaging said1riinions, a correspon ing series of angular eys having camsurfaces ontheir rear ends, and a corresponding series of levers interposed betweensaid keys and said actuatinggears, whereby separate and independentmovement may be imparted to said racks or frames from said keys.

2. In a leaf-turner, a series of individual racks or frames, means forattaching leaves to said frames, an upright post to which the upper endsof said racks are 0 eratively connected, a pinion attached to t e lowerend of each of said racks, an oscillating ear engaging each of saidpinions, said oscil ating gears being grouped upon a common shaft, aseries of key-levers of angular form and having their rear ends rovidedwith tapering surfaces, a series of angular levers having their outerends turned down in the paths of the rear ends of said key-levers, and aseries of short links connecting said angular levers with theoscillating gears. 4

In testimony whereof I affix my signature in presence of two witnesses.

MARTIN J. BRENNAN.

Witnesses R. J. MGOARTY, CAROLYN M. THEOBALD.

